SplineAreaSeriesView Class

Represents a series view of the Spline Area type.

Assembly: DevExpress.XtraCharts.v20.2.dll

NuGet Packages: DevExpress.Charts, DevExpress.WindowsDesktop.Charts

Declaration

C#
VB.NET

public class SplineAreaSeriesView :
    AreaSeriesView,
    ISplineSeriesView,
    ISplineView

Public Class SplineAreaSeriesView
    Inherits AreaSeriesView
    Implements ISplineSeriesView,
               ISplineView

Remarks

The SplineAreaSeriesView class provides the functionality of a series view of the Spline Area type within a chart control.

In addition to the common view settings inherited from the base AreaSeriesView class, the SplineAreaSeriesView class declares the spline type specific settings, which allow you to define the style of the spline curve (SplineAreaSeriesView.LineTensionPercent).

Note that a particular view type can be defined for a series via its SeriesBase.View property.

For more information on series views of the Spline Area type, refer to the Spline Area Chart topic.

Example

The following example demonstrates how to create a ChartControl with a series of the SplineAreaSeriesView type, set its general properties, and add this chart to a form at runtime. Before proceeding with this example, first create a Windows Forms Application in Visual Studio, and include all necessary assemblies to the References list of your project.

Then, add the following code to the Form.Load event handler.

C#
VB.NET

using System;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...

private void Form1_Load(object sender, EventArgs e) {
    // Create a new chart.
    ChartControl splineAreaChart = new ChartControl();

    // Create a spline area series.
    Series series1 = new Series("Series 1", ViewType.SplineArea);

    // Add points to it.
    series1.Points.Add(new SeriesPoint(1, 3));
    series1.Points.Add(new SeriesPoint(2, 12));
    series1.Points.Add(new SeriesPoint(3, 4));
    series1.Points.Add(new SeriesPoint(4, 17));
    series1.Points.Add(new SeriesPoint(5, 3));
    series1.Points.Add(new SeriesPoint(6, 12));
    series1.Points.Add(new SeriesPoint(7, 4));
    series1.Points.Add(new SeriesPoint(8, 17));

    // Add the series to the chart.
    splineAreaChart.Series.Add(series1);

    // Set the numerical argument scale types for the series,
    // as it is qualitative, by default.
    series1.ArgumentScaleType = ScaleType.Numerical;

    // Access the view-type-specific options of the series.
    ((SplineAreaSeriesView)series1.View).LineTensionPercent = 90;

    // Access the type-specific options of the diagram.
    ((XYDiagram)splineAreaChart.Diagram).AxisX.Range.SideMarginsEnabled = false;

    // Hide the legend (if necessary).
    splineAreaChart.Legend.Visible = false;

    // Add a title to the chart (if necessary).
    splineAreaChart.Titles.Add(new ChartTitle());
    splineAreaChart.Titles[0].Text = "A Spline Area Chart";

    // Add the chart to the form.
    splineAreaChart.Dock = DockStyle.Fill;
    this.Controls.Add(splineAreaChart);
}

Imports System
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
' ...

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) _ 
Handles MyBase.Load
    ' Create a new chart.
    Dim splineAreaChart As New ChartControl()

    ' Create a spline area series.
    Dim series1 As New Series("Series 1", ViewType.SplineArea)

    ' Add points to it.
    series1.Points.Add(New SeriesPoint(1, 3))
    series1.Points.Add(New SeriesPoint(2, 12))
    series1.Points.Add(New SeriesPoint(3, 4))
    series1.Points.Add(New SeriesPoint(4, 17))
    series1.Points.Add(New SeriesPoint(5, 3))
    series1.Points.Add(New SeriesPoint(6, 12))
    series1.Points.Add(New SeriesPoint(7, 4))
    series1.Points.Add(New SeriesPoint(8, 17))

    ' Add the series to the chart.
    splineAreaChart.Series.Add(series1)

    ' Set the numerical argument scale types for the series,
    ' as it is qualitative, by default.
    series1.ArgumentScaleType = ScaleType.Numerical

    ' Access the view-type-specific options of the series.
    CType(series1.View, SplineAreaSeriesView).LineTensionPercent = 90

    ' Access the type-specific options of the diagram.
    CType(splineAreaChart.Diagram, XYDiagram).AxisX.Range.SideMarginsEnabled = False

    ' Hide the legend (if necessary).
    splineAreaChart.Legend.Visible = False

    ' Add a title to the chart (if necessary).
    splineAreaChart.Titles.Add(New ChartTitle())
    splineAreaChart.Titles(0).Text = "A Spline Area Chart"

    ' Add the chart to the form.
    splineAreaChart.Dock = DockStyle.Fill
    Me.Controls.Add(splineAreaChart)
End Sub